A driving and resistance control system for a permanent-magnet synchronous motor is disclosed. A control device includes a processing unit, a motor driving circuit, a resistance controller, and an interlock switch. In a first operation mode, the interlock switch makes the motor driving circuit and the permanent-magnet synchronous motor open-circuiting, and connecting stator windings of the permanent-magnet synchronous motor to the resistance controller, and under this condition, the external rotor of the permanent-magnet synchronous motor is rotated by spinning of a flywheel, so that the permanent-magnet synchronous motor is operating in a generator mode to generate a resisting force to the flywheel by mesas of a resistance generation device. In a second operation mode, the interlock switch makes the motor driving circuit and the permanent-magnet synchronous motor closed-circuiting and cutting off control of the resistance controller, and electrical energy is supplied from the power supply circuit to the permanent-magnet synchronous motor, so as to make the permanent-magnet synchronous motor operating in a motor mode to induce an acceleration on the external rotor.

A kinetic energy recovery system with flywheel includes a cascade flywheel doubly-fed electric machine and an electric motor. The cascade flywheel doubly-fed electric machine has a stator end coil, a rotor end coil and a flywheel. The flywheel can store kinetic energy by increasing speed or releasing kinetic energy by decreasing speed. A control circuit has an inverter, a rectifier and a DC bus connecting the inverter and the rectifier. The inverter supplies alternating current to the rotor end coil. The rectifier has an AC end connected to the stator end coil through an AC bus. The rectifier converts alternating current to direct current, so that the inverter can draw power from the DC bus. The electric motor has a phase coil connected to the AC bus. When the cascade flywheel double-fed electric machine decelerates, the system converts mechanical energy into electrical energy.

This application is directed to an apparatus for providing electrical charge to a vehicle. The apparatus comprises a driven mass, a generator, a charger, a hardware controller, and a communication circuit. The driven mass rotates in response to a kinetic energy of the vehicle and is coupled to a shaft such that rotation of the driven mass causes the shaft to rotate. The driven mass exists in one of (1) an extended position and (2) a retracted position. The generator generates an electrical output based on a mechanical input coupled to the shaft such that rotation of the shaft causes the mechanical input to rotate. The charger is electrically coupled to the generator and: receives the electrical output, generates a charge output based on the electrical output, and conveys the charge output to the vehicle. The controller controls whether the driven mass is in the extended position or the retracted position in response to a signal received from the communication circuit.

Flywheel based electrical energy management system and device. The device will often comprise at least one shaft mounted flywheel, each flywheel comprising a flywheel mass that contains a plurality of permanent magnets. The flywheel spins within at least one stator comprising a plurality of magnetic pickup coils configured so that the flywheel mass can rotate freely within the stator. The flywheel may be placed in a vacuum chamber and be supported by magnetic bearings. The flywheel shaft(s) are typically connected to one or more axial mounted motor generators, and the system further typically comprises a storage battery and control processor. The system handles a variety of different and not always stable input power sources, and converts this to continuous, efficient and stable electrical power. The system can handle a variety of clients, such as buildings, electric vehicles, and the like, and can operate under a variety of challenging conditions.

A power generation device includes a first generator connected to a prime mover, a second generator connected to the prime mover, a first DCDC converter connected to the first generator, and a second DCDC converter connected to the second generator.

A work vehicle and energy storage device include a ballast providing ballast weight to the horizontal end of the work vehicle, a stator of an electric machine having a vertically extending axis, a rotor of the electric machine fixed for rotation with the ballast and configured for rotation about the vertically extending axis, and a bearing supporting the ballast weight and the rotor for rotation of the rotor relative to the stator.

A power transfer system includes a series of energy storage modules (ESMs) or energy storage devices (ESDs) that are coupled together to be able to transfer power between one another, as well as receive power from a power source, such as an onshore power generator. The energy storage modules may be hybrid energy storage modules, each including an electrical-machine-inertial energy store and an electro-chemical energy store. The energy storage modules are configured to receive constant-current DC or AC input from the power source, and are able to provide constant-current and constant-voltage output, either sequentially or simultaneously. The power transfer system allows the modules to operate independently or in conjunction with one another, should some of the connections of the system be broken. The energy storage modules may be used to provide power to underwater systems, for example sonar systems, weapons systems, or underwater vehicles.

A system for providing dynamic force comprises a solar cell, an engine, a transmission module, two motors, two one-way fly wheels, and an electrical energy storage device. The solar cell is configured to drive the two motors. The transmission module comprises an input terminal and two output terminals. The input terminal of the transmission module is driven by the engine, and the output terminals of the transmission module are configured to drive the two motors respectively. The electrical energy storage device is configured to store electrical energy generated by the solar cell and drive the two motors. The two one-way fly wheels are driven by the two motors respectively.

This application is directed to an apparatus for providing electrical charge to a vehicle. The apparatus comprises a driven mass configured to rotate in response to a kinetic energy of the vehicle, the driven mass coupled to a shaft, where rotation of the driven mass causes the shaft to rotate. The apparatus further comprises a hardware controller. The hardware controller identifies output power parameters for the vehicle and generate a control signal based on the identified output power parameters for the vehicle. The apparatus also comprises a generator that generates an electrical output based on a mechanical input and a conditioning circuit electrically coupled to the generator. The conditioning circuit receives the electrical output from the generator and the control signal from the hardware controller, generates a charge output based on the electrical output and the control signal, and conveys the charge output to the vehicle.

A work vehicle and energy storage device include a ballast providing ballast weight to the horizontal end of the work vehicle, a stator of an electric machine having a vertically extending axis, and a rotor of the electric machine fixed for rotation with the ballast.